Worked on modernizing the CLI installation process for the jstz-dev/jstz repository, focusing on improving reliability and maintainability. Refactored install.js and run.js to use ES Module syntax, aligning the codebase with current JavaScript standards. Enhanced error handling and introduced robust fallback mechanisms for binary downloads, addressing compatibility issues across diverse environments. Emphasized automation readiness and streamlined deployment by strengthening the installer’s resilience to failures. Leveraged skills in Node.js, CLI development, and file system operations to deliver a more stable installation flow. The work established a solid foundation for future CLI enhancements and reduced the likelihood of installation-related disruptions.